MLA

Hughes, Langston, 1902-1967. Odetta. Box 136. circa 1920-1993. https://collections.library.yale.edu/catalog/17399997.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 136"])(circa 1920-1993)[Odetta]. https://collections.library.yale.edu/catalog/17399997.